| Whetstone Capital Advisors, LLC | 1,508,303 | $8.6m | 2.3% |
| ROYCE & ASSOCIATES LP | 1,089,398 | $6.2m | 0.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 699,604 | $4.0m | 0.0% |
| KENNEDY CAPITAL MANAGEMENT LLC | 644,150 | $3.7m | 0.1% |
| RICE HALL JAMES & ASSOCIATES, LLC | 633,842 | $3.6m | 0.2% |
| BLAIR WILLIAM & CO/IL | 607,925 | $3.5m | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 583,956 | $3.3m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 477,687 | $2.7m | 0.0% |
| BlackRock, Inc. | 445,382 | $2.5m | 0.0% |
| Parkman Healthcare Partners LLC | 350,347 | $2.0m | 0.2% |
| Bullseye Asset Management LLC | 258,311 | $1.5m | 0.8% |
| AWM Investment Company, Inc. | 240,421 | $1.4m | 0.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 207,345 | $1.2m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 169,538 | $969,757 | 0.0% |
| RENAISSANCE TECHNOLOGIES LLC | 167,700 | $959,244 | 0.0% |
| MARSHALL WACE, LLP | 162,186 | $927,704 | 0.0% |
| P.A.W. CAPITAL CORP | 160,000 | $915,200 | 0.7% |
| CITADEL ADVISORS LLC | 157,992 | $903,715 | 0.0% |
| MORGAN STANLEY | 156,314 | $894,116 | 0.0% |
| Mink Brook Asset Management LLC | 141,235 | $807,864 | 0.4% |
| D. E. Shaw & Co., Inc. | 138,084 | $789,840 | 0.0% |
| Janney Montgomery Scott LLC | 135,969 | $778,000 | 0.0% |
| JANE STREET GROUP, LLC | 122,086 | $698,332 | 0.0% |
| GOLDMAN SACHS GROUP INC | 105,037 | $600,812 | 0.0% |
| Quantinno Capital Management LP | 99,124 | $566,989 | 0.0% |